package lab04.test01;
//继承才可以实现线程，并在run中重写
public class HelloWorldThread extends Thread{
    @Override
    public void run() {

        while(true) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("Hello world!");
        }
        }
}
